Window construction.



B. S. MGCLELLAN. WINDOW CONSTRUCTION. APPLICATION FILED 11141.12, 1910.

Patented Jan. 21, 1913.

' ggf BENJAMIN S. MCCLELLAN, OF CHICAGO, ILLINOIS.`

WINDOW CONSTRUCTION.

Speccation of Letters Patent.

Patented aan. 21, i913.

Application led April 12, 1910. Serial No. 555,106.

`To all whom t may concern Be it known that I, BENJAMIN S. Mo- 'CLELLAN,a citizen of the United States, and residing at Chicago, in the count-yof Cook and State of Illinois, have invented a new and usefulImprovement in Window Constructions, of which the following is acomplete specification.

Heretofore in cars having metallic window frames it has been customarytoprovide the racks for the sash locks by formingY apertures in theinner or rear walls of the guideways, into which apertures the lockbolts project to hold the sash in adjusted position. Such constructionis objectionable for the reason that the apertures must be formed withgreat 'accuracy to vprevent the bolts from lateral movement therein,since if they are not so formed the sash will rattle in the guideways.Also, when theapertures are formed with a downward and lateral inclinefor the lock bolts, so that the gravity of the sash may be utilizedtoforce the sash against the stops, it has been found that the metal inwhich the apertures are formed is usually so thin that excessive wearYi's caused bot-h on the incline and on the bolts. Furthermore, to punchthe'apertures is an expensive operation, requiring great care and skillin order to turn out a marketable product.

The main objects of the invent-ion are to provide a metallic Windowconstruction having a rack bar in each guideway, which rack` bars aresecured to the inner wall of the guideway, and protrude from said wallinto the guideway toward the sash; to provide a metallic windowconstruction having relatively deep guideways for the .sash to permitthe insertion of the rack bars between the edges of the sash and therear of the guideways; to provide a metallic window construction inwhich the locking bolts are afforded a broad bearing surface, and thenecessity of aperturing the frame to receive the locking bolts isentirely obviated; and to provide a window construction adapted toprevent or absorb the noise usually caused by the sash lock bolts fwhenthe sash is being raised.

A specific construction embodying the invention is illust-rated in theaccompanying.

drawings, in which:

Figure 1 1s a fragmentary, horizontal sectlon of a window constructionembodied 1n .for the sash lock.

this invention. Fig. 2 is a fragmentary view, partly in section, lookinginto the guideway for the sash. Fig. 3 is a fragmentary side elevationof the rackbar, looking from the outer side of the window. Fig. 4 is afragmentary, horizontal section of a slightly modifiedform of windowconstrue t1on.

In thejconstruction shown the metallic windowframe 1 is formed toprovide an integral outer stop 2, and a comparatively deep guideway 3for the sash 4. One side `wall of the guideway is formed bythe edge orside 5 of the stop 2, and the rear or inner wall 6 of the guideway isintegrally con nected with the stop 2 and is spaced a considerabledistance from the edge of the sash 4.

The inner window stop 7 is bolted to the 'post 8 and forms the otherside of the guideway. The side of the stop 7 adjacent to the guideway isbeveled at 9, and the angle bar 10 has one flange secured between thestop and the post, and the other flange lies flat against said beveledsurface 9. A flexible weather strip 11 ,is secured at one edge to theedge of the s`ash by means of a T bar I 12 and its free edge overlapsthe adjacent flange of the bar 10 and bridges over the joint between thesash and the stop 7. The flange .13 of the face of the sash, and theflange 14 extends along the edge 5 of the stop 2, and together with theflange lil-provides a bearing surface or wear plate to protectthe sashfrom wear against the stop.

Rigidly secured to the inner or rear wall 6 of each guideway andprojecting into the guideway from said wall is the rack bar 15 Said rackbar may be of T bar overlaps the outer.

any preferred form but preferably it is provided with. downwardly andlaterally inclined shoulders 16 upon which the bolt 17 of the sash lockrests when the bolt is in locking position, and which, by reason o thegravity of the wear plates on the sash firmly against the stop 2.Beneath each of said shoulders, with the exception of the two lowerones, is an inclined surface 18 on the face of the rack adjacent to thesash. Said inclined surfaces 18 extend from the rear port-ion of therack bar forwardly toward the sash `and act to retract the lock bolts 17when the sash is raised. Above the lower shoul f 10o sash, act to forcethe,

der 16 is a .shoulder 19 4against :which 'the;

of screws 20 which extend through the wall 6 and into the post.

For the purpose of deadening the noise which would be occasioned by thelock bolts 17 traveling vover the beveled surfaces\18 when the sash isbeing raised, especially in" vmetallic window constructions, a strip offelt, rubber or other suitable material 2l is placed between each rackbar and the wall 6 of the guideway. The strips serve to absorb the soundand prevent unnecessary noise. V

If preferred-the anglebar .22 may be lemployed to secure t-he weatherstrip 1l to the sash, as shown in: Fig..4, in which case the stop .'2risconstructed of sulicient depth to overlap. the edge of thefsash', andone flange*l of the angle'bar provides thewear plate for the sash.

By attaching .the rack-bar to the inner wall of the guideway for thesash and form.

-metallic window frame having a guideway ing the guideway deep enough topermit the rack to lie intermediate the wall and the edge of the sash,the construction of-metallic frames is greatly simplified andcheapfened. Furthermore a much broader metallic bearing for the lockbolts can be obtained' by the use of rack bars than can be obtained'where the wall 6 of the. guideway isaper-- tured to receive thebolts,\since the metal forming such Wallis usually comparativelythin.

Obviously many details of the form and construction shown may be variedwithout departing from the scope of the claims.

1. A window construction, comprising a window frame having a guidewaytherein, a wooden sash, a rack bar consisting of a fiat metal striplocatedv in said guidevvay and secured fiatwise to the inner Wall ofsaid guideway in spaced lrelationto the side walls thereof, a metallicmember secured to the edge of said sash facing said guitleway andprovided with a laterally extending in tegral flange constituting a-wearplate projecting into said guideway and adapted to bear against one ofthe slde Walls thereof, the edge of said iange terminating in the spacebetween the rack bar and the side wall of t-he guideway, and a lockingbolt mountseat on saidinclined on the sash and adapted to engage saidrack bar.

2. A lwindow construction, comprising a window frame having a guidewaytherein, a ,Wooden sash, a metallic member secured to the edge of saidsash 'facing said guideway and provided with a laterally extending inwise to the inner wall thereof, said rack bar being provided' with -aplurality of lon-gitu-l dinally spaced notches or openingsextend-4ingthrough the edge. of said rack ybar adjacent the side Wallvof theguideway-in contact with the said wear plate, said notches formingshoulders inclined outwardlyand ydownwardly toward the wear plate, and alocking bolt mounted. on the sash adapted to shoulders for holdingthe'wear plate in .close contact with the side Wall of the guideway.

3. .A window construction, comprising` a therein, awooden sash, a fiatmetallic member secured to the edge of said sash facing said guideway.and provided at one end with a transversely extending integral flangeconstituting a wear, plate for said sash, one part of said flangeprojecting intol .said gudeway-and adapted to bear against Yone ofthesidewalls thereof and the OppO- site -pa-rt. ofI said-,flangeoverlapping the outer face of the sash, a' flat metal strip constitutinga rack bar located:y in said guideway and secured flatwise to1thefginner. wall v thereof, a strip of felt interposed between. saidrack bar .and the inner .Wall of said .guideway, a

locking bolt mounted on said sash and adapted to engage said rack.. bar,and a .weather strip secured to said-sash between said flat'metalmemberand the edge of the ,same and having its free end bearing against'the'v side Wall. of the guideway opposite the wear plate.

In .testimony whereof I have hereunto subscribed my name in the presenceofV two Witnesses.

BENJAMIN S. MCCLELLAN- l Witnesses: A

`W. W. WITHENBURY,

JennT CoRWIiv.

